[2030] | 1 | MODULE trczdf |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE trczdf *** |
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| 4 | !! Ocean Passive tracers : vertical diffusive trends |
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| 5 | !!===================================================================== |
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| 6 | !! History : 9.0 ! 2005-11 (G. Madec) Original code |
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| 7 | !! NEMO 3.0 ! 2008-01 (C. Ethe, G. Madec) merge TRC-TRA |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | #if defined key_top |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! 'key_top' TOP models |
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| 12 | !!---------------------------------------------------------------------- |
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[5836] | 13 | !! trc_zdf : update the tracer trend with the lateral diffusion |
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| 14 | !! trc_zdf_ini : initialization, namelist read, and parameters control |
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[2030] | 15 | !!---------------------------------------------------------------------- |
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[5836] | 16 | USE trc ! ocean passive tracers variables |
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| 17 | USE oce_trc ! ocean dynamics and active tracers |
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| 18 | USE trd_oce ! trends: ocean variables |
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| 19 | USE trazdf_exp ! vertical diffusion: explicit (tra_zdf_exp routine) |
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| 20 | USE trazdf_imp ! vertical diffusion: implicit (tra_zdf_imp routine) |
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| 21 | USE trcldf ! passive tracers: lateral diffusion |
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| 22 | USE trdtra ! trends manager: tracers |
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| 23 | USE prtctl_trc ! Print control |
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[2030] | 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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[5836] | 28 | PUBLIC trc_zdf ! called by step.F90 |
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| 29 | PUBLIC trc_zdf_ini ! called by nemogcm.F90 |
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| 30 | |
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| 31 | ! !!** Vertical diffusion (nam_trczdf) ** |
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| 32 | LOGICAL , PUBLIC :: ln_trczdf_exp !: explicit vertical diffusion scheme flag |
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| 33 | INTEGER , PUBLIC :: nn_trczdf_exp !: number of sub-time step (explicit time stepping) |
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[2030] | 34 | |
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| 35 | INTEGER :: nzdf = 0 ! type vertical diffusion algorithm used |
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| 36 | ! ! defined from ln_zdf... namlist logicals) |
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| 37 | !! * Substitutions |
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| 38 | # include "zdfddm_substitute.h90" |
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| 39 | # include "vectopt_loop_substitute.h90" |
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| 40 | !!---------------------------------------------------------------------- |
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[5836] | 41 | !! NEMO/TOP 3.7 , NEMO Consortium (2015) |
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[10762] | 42 | !! $Id: trczdf.F90 7753 2017-03-03 11:46:59Z mocavero $ |
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[2715] | 43 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[2030] | 44 | !!---------------------------------------------------------------------- |
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| 45 | CONTAINS |
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[2715] | 46 | |
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[2030] | 47 | SUBROUTINE trc_zdf( kt ) |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | !! *** ROUTINE trc_zdf *** |
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| 50 | !! |
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| 51 | !! ** Purpose : compute the vertical ocean tracer physics. |
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| 52 | !!--------------------------------------------------------------------- |
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| 53 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 54 | ! |
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[7753] | 55 | INTEGER :: jk, jn |
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[2030] | 56 | CHARACTER (len=22) :: charout |
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[3294] | 57 | REAL(wp), POINTER, DIMENSION(:,:,:,:) :: ztrtrd ! 4D workspace |
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[2030] | 58 | !!--------------------------------------------------------------------- |
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[3294] | 59 | ! |
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| 60 | IF( nn_timing == 1 ) CALL timing_start('trc_zdf') |
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| 61 | ! |
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[2030] | 62 | IF( l_trdtrc ) THEN |
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[3294] | 63 | CALL wrk_alloc( jpi, jpj, jpk, jptra, ztrtrd ) |
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[7753] | 64 | ztrtrd(:,:,:,:) = tra(:,:,:,:) |
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[2030] | 65 | ENDIF |
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| 66 | |
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| 67 | SELECT CASE ( nzdf ) ! compute lateral mixing trend and add it to the general trend |
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[6140] | 68 | CASE ( 0 ) ; CALL tra_zdf_exp( kt, nittrc000, 'TRC', r2dttrc, nn_trczdf_exp, trb, tra, jptra ) ! explicit scheme |
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| 69 | CASE ( 1 ) ; CALL tra_zdf_imp( kt, nittrc000, 'TRC', r2dttrc, trb, tra, jptra ) ! implicit scheme |
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[2030] | 70 | END SELECT |
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| 71 | |
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[3632] | 72 | IF( l_trdtrc ) THEN ! save the vertical diffusive trends for further diagnostics |
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[2030] | 73 | DO jn = 1, jptra |
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| 74 | DO jk = 1, jpkm1 |
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[7753] | 75 | ztrtrd(:,:,jk,jn) = ( ( tra(:,:,jk,jn) - trb(:,:,jk,jn) ) / r2dttrc ) - ztrtrd(:,:,jk,jn) |
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[2030] | 76 | END DO |
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[4990] | 77 | CALL trd_tra( kt, 'TRC', jn, jptra_zdf, ztrtrd(:,:,:,jn) ) |
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[2030] | 78 | END DO |
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[3294] | 79 | CALL wrk_dealloc( jpi, jpj, jpk, jptra, ztrtrd ) |
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[2030] | 80 | ENDIF |
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| 81 | ! ! print mean trends (used for debugging) |
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| 82 | IF( ln_ctl ) THEN |
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| 83 | WRITE(charout, FMT="('zdf ')") ; CALL prt_ctl_trc_info(charout) |
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| 84 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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| 85 | END IF |
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| 86 | ! |
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[3294] | 87 | IF( nn_timing == 1 ) CALL timing_stop('trc_zdf') |
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| 88 | ! |
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[2030] | 89 | END SUBROUTINE trc_zdf |
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| 90 | |
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| 91 | |
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[5836] | 92 | SUBROUTINE trc_zdf_ini |
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[2030] | 93 | !!---------------------------------------------------------------------- |
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[5836] | 94 | !! *** ROUTINE trc_zdf_ini *** |
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[2030] | 95 | !! |
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| 96 | !! ** Purpose : Choose the vertical mixing scheme |
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| 97 | !! |
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| 98 | !! ** Method : Set nzdf from ln_zdfexp |
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| 99 | !! nzdf = 0 explicit (time-splitting) scheme (ln_trczdf_exp=T) |
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| 100 | !! = 1 implicit (euler backward) scheme (ln_trczdf_exp=F) |
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[2476] | 101 | !! NB: The implicit scheme is required when using : |
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| 102 | !! - rotated lateral mixing operator |
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[5836] | 103 | !! - TKE, GLS vertical mixing scheme |
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[2030] | 104 | !!---------------------------------------------------------------------- |
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[5836] | 105 | INTEGER :: ios ! Local integer output status for namelist read |
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| 106 | !! |
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| 107 | NAMELIST/namtrc_zdf/ ln_trczdf_exp , nn_trczdf_exp |
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| 108 | !!---------------------------------------------------------------------- |
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| 109 | ! |
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| 110 | REWIND( numnat_ref ) ! namtrc_zdf in reference namelist |
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| 111 | READ ( numnat_ref, namtrc_zdf, IOSTAT = ios, ERR = 905) |
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| 112 | 905 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_zdf in reference namelist', lwp ) |
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| 113 | ! |
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| 114 | REWIND( numnat_cfg ) ! namtrc_zdf in configuration namelist |
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| 115 | READ ( numnat_cfg, namtrc_zdf, IOSTAT = ios, ERR = 906 ) |
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| 116 | 906 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_zdf in configuration namelist', lwp ) |
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| 117 | IF(lwm) WRITE ( numont, namtrc_zdf ) |
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| 118 | ! |
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| 119 | IF(lwp) THEN ! Control print |
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| 120 | WRITE(numout,*) |
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| 121 | WRITE(numout,*) ' Namelist namtrc_zdf : set vertical diffusion parameters' |
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| 122 | WRITE(numout,*) ' time splitting / backward scheme ln_trczdf_exp = ', ln_trczdf_exp |
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| 123 | WRITE(numout,*) ' number of time step nn_trczdf_exp = ', nn_trczdf_exp |
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| 124 | ENDIF |
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[2030] | 125 | |
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[5836] | 126 | ! ! Define the vertical tracer physics scheme |
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| 127 | IF( ln_trczdf_exp ) THEN ; nzdf = 0 ! explicit scheme |
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| 128 | ELSE ; nzdf = 1 ! implicit scheme |
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[2030] | 129 | ENDIF |
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| 130 | |
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[5836] | 131 | ! ! Force implicit schemes |
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| 132 | IF( ln_trcldf_iso ) nzdf = 1 ! iso-neutral lateral physics |
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| 133 | IF( ln_trcldf_hor .AND. ln_sco ) nzdf = 1 ! horizontal lateral physics in s-coordinate |
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| 134 | #if defined key_zdftke || defined key_zdfgls |
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| 135 | nzdf = 1 ! TKE or GLS physics |
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[2030] | 136 | #endif |
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[5836] | 137 | IF( ln_trczdf_exp .AND. nzdf == 1 ) & |
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| 138 | CALL ctl_stop( 'trc_zdf : If using the rotated lateral mixing operator or TKE, GLS vertical scheme ', & |
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[2476] | 139 | & ' the implicit scheme is required, set ln_trczdf_exp = .false.' ) |
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[2030] | 140 | |
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| 141 | IF(lwp) THEN |
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| 142 | WRITE(numout,*) |
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| 143 | WRITE(numout,*) 'trc:zdf_ctl : vertical passive tracer physics scheme' |
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| 144 | WRITE(numout,*) '~~~~~~~~~~~' |
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| 145 | IF( nzdf == 0 ) WRITE(numout,*) ' Explicit time-splitting scheme' |
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| 146 | IF( nzdf == 1 ) WRITE(numout,*) ' Implicit (euler backward) scheme' |
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| 147 | ENDIF |
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[5836] | 148 | ! |
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| 149 | END SUBROUTINE trc_zdf_ini |
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| 150 | |
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[2030] | 151 | #else |
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| 152 | !!---------------------------------------------------------------------- |
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| 153 | !! Default option Empty module |
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| 154 | !!---------------------------------------------------------------------- |
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| 155 | CONTAINS |
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| 156 | SUBROUTINE trc_zdf( kt ) |
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| 157 | INTEGER, INTENT(in) :: kt |
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| 158 | WRITE(*,*) 'trc_zdf: You should not have seen this print! error?', kt |
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| 159 | END SUBROUTINE trc_zdf |
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| 160 | #endif |
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| 161 | !!============================================================================== |
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| 162 | END MODULE trczdf |
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